Companies in Ireland with the highest profit margin

Net margin is net income divided by revenue. Only companies with at least $1 billion in revenue are ranked here: a small company can post an extreme margin that tells you nothing. Figures are for fiscal year 2025 and are read directly from each company's SEC filings; the source column on every row links to the document.

Ranks 1–17 of 17 · Fiscal year 2025 · Data as of September 25, 2026

Only companies with at least $1bn in revenue are ranked.

Aercap Holdings (AER) tops the list with 44.0% in net margin for fiscal 2025, ahead of PDD Holdings (22.7%) and Aon (21.5%). Across the top 10, net margin ranges from 44.0% down to 11.0%. 17 companies in Ireland report net margin, 1.2% of the 1438-filer universe. The last place on the list, Cimpress, comes in at 0.4%.

Net margin
#CompanyNet marginYoY15-year trend
1Aercap HoldingsAERIEIndustrials44.0%+67.8%
2PDD HoldingsPDDIETechnology22.7%−20.6%
3AonAONIEFinancials21.5%+27.2%
4AlkermesALKSIEHealthcare16.4%−30.5%
5EatonETNIEIndustrials14.9%−2.4%
6Johnson Controls InternationalJCIIEIndustrials13.9%+87.8%
7Trane TechnologiesTTIETechnology13.7%+5.7%
8MedtronicMDTIEHealthcare13.2%−5.0%
9SterisSTEIEHealthcare13.2%+17.1%
10AccentureACNIETechnology11.0%−1.6%
11TE ConnectivityTELIEIndustrials10.7%−47.0%
12CRH PublicCRHIEMaterials10.0%+2.1%
13IconICLRIEHealthcare2.8%−69.2%
14Smurfit WestRockSWIEMaterials2.2%+48.4%
15James Hardie IndustriesJHXIEMaterials2.2%−80.3%
16DoleDOLEIEConsumer staples0.6%−62.2%
17CimpressCMPRIECommunication services0.4%−91.7%

All figures from SEC filings · FY2025 · 17

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{{cite web |title=Companies in Ireland with the highest profit margin |url=https://companiesranked.com/en/companies-with-the-highest-profit-margin-in-ireland |website=CompaniesRanked |date=2026-09-25 |language=en}}

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@misc{companiesranked-en-companies-with-the-highest-profit-margin-in-ireland-2026,
  author       = {{CompaniesRanked}},
  title        = {{Companies in Ireland with the highest profit margin}},
  year         = {2026},
  howpublished = {\url{https://companiesranked.com/en/companies-with-the-highest-profit-margin-in-ireland}},
  note         = {Compiled from SEC EDGAR XBRL filings; data as of 2026-09-25},
  urldate      = {2026-09-25}
}

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